 |
 |
GEO help: Mouse over screen elements for information. |
|
| Status |
Public on Nov 01, 2012 |
| Title |
Gene expression in a three-dimensionally cultivated human hepatocellular carcinoma (HCC) model |
| Organism |
Homo sapiens |
| Experiment type |
Expression profiling by array
|
| Summary |
The development of more complex but reliable systems for compound testing in a pharmaceutical context is a challenging task to date. Three-dimensional (3D), organ mimetic cell culture is aiming to become an alternative to common two-dimensional (2D) cell culture or animal testing in that field. We developed a biocompatible 3D cell culture environment for a hepatocellular carcinoma (HCC) model that enables cellular maintenance in a polycarbonate scaffold structure. Albumin, regarded as a differentiation marker, was elevated in statically 3D cultivated HepG2 cells. Expression of HCC tumor marker alpha-fetoprotein (AFP) was reduced compared to immunofluorescence stainings of 2D cultivated cells. Remarkably, expression of cytokeratin and pathophysiologically relevant beta-1 integrin (ITGB1) was found enhanced in nonperfused 3D cell culture. Changes in gene expression induced by the 3D cultivation environment were investigated using Ingenuity Pathway Analysis (IPA). Our findings revealed involvement of the insulin growth factor (IGF) signaling pathway in upregulation of matrix metalloproteinases (MMP) and ITGB1. The experimental data indicate a more differentiated state in 3D cultivated HepG2 cells than in the respective 2D experiments. Hence, scaffold-supported 3D cultivation of HepG2 cells may lead to a gain of information valuable for both drug testing and cancer research.
|
| |
|
| Overall design |
HepG2 cells were cultivated for five days under 2D and 3D statical and perfused conditions. Cultivation was started with 0.25x10^6 cells in 2D and with 1x10^6 vital cells for the 3D experiments. The day of seeding was defined as d0. The groups were classified as follows: 2D, i.e., monolayer cultures, 3D, i.e., statical 3D cultures and BR, which denotes perfused 3D culture of HepG2 cells. The perfusable bioreactor system was operated using a peristaltic pump. It houses the MatriGrid, a polycarbonate-based microporous cellular support. For 3D static cultivation, cell-inoculated MatriGrids were placed in wells of a 24-well plate. Microarray experiments of three 2D (i.e., control), three 3D statically and three actively perfused 3D cultivations were performed at SIRS-Lab GmbH (SIRS-Lab GmbH, Jena, Germany) according to the manufacturer's instructions (Illumina, San Diego, CA). Altogether, 9 RNA samples of hepatocyte cultures and an internal control RNA were hybridized on two HumanHT-12 v4 Expression BeadChips.
|
| |
|
| Contributor(s) |
Fernekorn U, Hampl J, Augspurger C, Hildmann C, Weise F, Klett M, Läffert A, Friedel K, Gebinoga M, Schober A |
| Citation missing |
Has this study been published? Please login to update or notify GEO. |
| Submission date |
Oct 31, 2012 |
| Last update date |
Aug 13, 2018 |
| Contact name |
Uta Fernekorn |
| URL |
http://www.tu-ilmenau.de/nbs
|
| Organization name |
Ilmenau Technical University
|
| Department |
Nano-Biosystem Technology
|
| Street address |
Gustav-Kirchhoff-Str.7
|
| City |
Ilmenau |
| ZIP/Postal code |
98693 |
| Country |
Germany |
| |
|
| Platforms (1) |
| GPL10558 |
Illumina HumanHT-12 V4.0 expression beadchip |
|
| Samples (9)
|
|
| Relations |
| BioProject |
PRJNA178612 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE41962_RAW.tar |
26.2 Mb |
(http)(custom) |
TAR |
| GSE41962_fold-changes.txt.gz |
4.2 Mb |
(ftp)(http) |
TXT |
| GSE41962_non-normalized.txt.gz |
5.8 Mb |
(ftp)(http) |
TXT |
| Processed data included within Sample table |
| Processed data are available on Series record |
|
|
|
|
 |
Less...
More...